gpu: nvgpu: IOCTL to disable watchdog per-channel

Add IOCTL NVGPU_IOCTL_CHANNEL_WDT to disable/enable
watchdog per-channel

Also, if watchdog is disabled, we currently schedule
the worker with MAX timeout.
Instead of this, do not schedule any worker if
watchdog is disabled

Bug 1683059
Bug 1700277

Change-Id: I7f6bec84adeedb74e014ed6d1471317b854df84c
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/837962
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index fe51f356..51955a3a 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -499,7 +499,6 @@ struct gk20a {
         u32 gr_idle_timeout_default;
         u32 timeouts_enabled;
 
-        u32 ch_wdt_enabled;
         struct mutex ch_wdt_lock;
 
         /* Channel priorities */